Static and Dynamic Leaching of Chromium(VI) from Chromium-Containing Slag
Static and Dynamic Leaching of Chromium(VI) from Chromium-Containing Slag
复制标题
含铬渣中六价铬的静态和动态浸出
DOI：
10.1089/ees.2010.0313
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发表时间：
2012-06-01
影响因子：
1.8
通讯作者：
Liao, Yingpin
中科院分区：
文献类型：
--
作者：
Li, Hangbin;Wang, Zhenxing;Liao, Yingpin
摘要由于炉渣可能是土壤和地下水污染的主要来源，了解含铬炉渣中六价铬[Cr(VI)]的释放和淋溶行为是至关重要的。本文报道了从湖南省中国铁合金制造厂沉积的含铬渣中静态和动态浸出后的铬(VI)行为。小试实验表明，影响铬(VI)溶出的主要因素有固液比、浸泡时间、搅拌、酸度、粒度和水的动态流动。根据动态淋溶实验得到的参数，建立了铬(VI)的释放和淋溶模型，并将其应用于研究区。该模型可以定量预测大气降水条件下土壤和地下水中六价铬的污染程度。
Abstract Because the slag can be a major source of soil and groundwater pollution, understanding the release and leaching behavior of hexavalent chromium [Cr(VI)], from chromium-containing slag is critical. We report Cr(VI) behavior after static and dynamic leaching from chromium-containing slag deposited at a ferro-alloy manufacturing plant in Hunan province, China. Bench-scale experiments indicate that the main factors influencing the dissolution release of Cr(VI) include the solid-liquid ratio, soak time, agitation, acidity, particle size, and water dynamic flow. Based on the parameters obtained from the dynamic leaching experiment, a Cr(VI) release and leaching model was developed and applied to the study area. The model can quantitatively predict the extent of Cr(VI) pollution of soil and groundwater under atmospheric precipitation.